The NRAO Special Colloquium will feature guest speaker Karl
Gordon of Space Telescope Science Institute this week. Gordon will speak o
n 'Extragalactic Dust Mass Determinations in the Optical and Infrared: Evi
dence for Dust Emissivity Variations” at 2 p.m. Friday\, December 7\, at t
he NRAO Auditorium in Socorro. Gordon will discuss an investigation using
the HERITAGE Herschel Key Project far-IR/submillimeter observations of the
Magellanic Clouds that indicate there are wavelength dependent variations
in the dust emissivity law with environment. All NRAO employees are invit
ed to attend via video.